Physical Modeling of Microstructure in Gray Cast Iron

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Jabbari Behnam, Mir Masoud | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40602 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Davami, Parviz; Varahram, Naser
Abstract:
The aim of this project is simulation of microstructure and prediction of microstructural length scales in gray cast iron. To attain this, the Fourier heat transfer equations have been solved in a simple domain by FDM (Finite Difference Method), and both thermal distribution and cooling rate were obtained. By coupling experimental results and numerical methods, a model developed for predicting primary and secondary dendrite arm spacing, thickness of eutectoid layers and graphite, and fraction of graphite, cementite and austenite. Besides this model predicts the ultimate tensile strength and Hardness Brinel. Another approach in this project is a new and simple computational method for evaluation of liquid fraction. Results of modeling show good agreement with experimental
Keywords:
Solidification Simulation ; Gray Cast Iron ; Cooling Rate ; Liquid Fraction ; Thermal Distribution

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